the prime minister has been prime minister since 2007. that means the prime minister has been prime minister for about 6 to 7 years.
fidel castro 1959-1976
every 4 years
Margaret Thatcher became Britain's first female Prime Minister on 4 May 1979. She remained in power for 11 years. There have been no Australian female Prime Ministers, as of 2008.
This depends on the system and the country. Generally, Prime Ministers are chosen by the elected representatives of an assembly, or appointed by the President and possibly confirmed. New Prime Ministers can occur every year or every 15 years.
That is a period of 100 years. There were more than 30 Prime Ministers in that time.
The Prime Minister of Pakistan is Syed Yousuf Raza Gillani. He took his charge as Prime Minister of Pakistan on 25 March 2008. Prime Minister is elected in Pakistan for five years so; he is expected to remain Prime Minister till 25 March 2013.
Hubert Ingraham has been the prime minister of the Bahamas since 2007 May 4, about 4 years. He was also previously the prime minister from 1992 August 21 to 2002 May 3, for about 10 years, a total of 14 years altogether.
Post of First Minister is for the 4 years between Holyrood Elections
The average age of Canadian Prime Ministers when taking office is 55 years old. The current prime minister, Stephen Harper, was 47 years old when he took office.
In Canada, the frequency of changes in ministers can vary based on several factors, including cabinet reshuffles, elections, or the resignation of a minister. Typically, prime ministers may conduct cabinet reshuffles every few years or in response to specific circumstances. Additionally, new ministers may be appointed following federal elections, which occur roughly every four years. As a result, there is no fixed schedule for ministerial changes; it largely depends on the political landscape and decisions made by the prime minister.
Because elections are not held very often. Canada became a federation in 1867, 144 years ago (as of 2011). With 22 Prime Ministers, that means an average term of ~6½ years. The longest a Prime Minister has ever served for is 22 years (Mackenzie King), though not continuously. The shortest is 69 days (Charles Tupper). So, 22 doesn't really seem like an unreasonably small number.